Mitchell, Simon; Fisher, J.
Author Affiliation, Ana.
Lithostratigraphy of the Grange Inlier, Westmoreland, Jamaica
Caribbean Journal of Earth Science
Date of Publication
The lithostratigraphy of the late Cretaceous succession (mid Campanian to early Maastrichtian) exposed in the Grange Inlier of western Jamaica is formally described based on detailed geological mapping at a scale of 1:12,500. Five new formations are recognised: Cabartia Formation, a succession of poorly sorted conglomerates interbedded with sandstones; Grange Formation, a thick unit of mudstones with thin sandstone and conglomerates units in the upper section; Glenbrook Formation, a thin bed of dense micritic to rubbly limestone to sandstone; Williamsfield Formation, alternating beds of pebble conglomerates and sandstones; and the Strawberry Formation, a sequence of red weathering sandstones, mudstones and conglomerates. Type sections are designated for each formation. Based on biostratigraphy and lithological comparisons, the succession in the Grange Inlier is considered to have correlatives in the Lucea, Green Island, Sunderland, St.Annís Great River and Central inliers of Jamaica.....